Worcester 1 Inch Solenoid Actuated Gas Operated SCHe System Valves [electronic resource].
Published
Washington, D.C. : United States. Dept. of Energy. Office of Environmental Management, 2000. Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
1 inch gas-operated full-port ball valves incorporate a solenoid and limit switches as integral parts of the actuator. These valves are normally open and fail safe to the open position (GOV-1*02 and 1*06 fail closed) to provide a flow path of helium gas to the MCO under helium purge and off-normal conditions when the MCO is isolated.